
BTW Dead Nation is fucking awesome when you get into it. Its like Super Stardust...the more you play it, the deeper it gets its claws into you. Plus the weapons are awesome when they're maxed - except the shotty. That's the only one I can't find an excuse to bother with...
And it's great co-op as well - although you need to use MSN or Skype or something for voice chat as it has no VOIP.